ICHNE UMON FLIES— A SIIME. 1 J). 



Tribe II. PH YGADEUONINI. 



IS(iS. Phiigadeuontokhr, Family 25, Forstek, Verh. d. luiturh. \'cr. pr. Rheiiil., 



XXV, pp. l-l-iand 181. 

 1S7:!. I'lii/tjddcnonind, Thomson, Opus. Eut., V., pp. 468 and 517. 

 is;t4. J'lii/<j(i(h'nonini, Tribe III, Ashmead, Proc. Ent. Soo. Wash., Ill, j). 278. 

 1900. I'h)itj(ulcuoniui, Trilie II, Asiimead, Smith's Insects of New Jersej', p. 568. 



This tiToup is uiKloul)te(lly the largest and pro])ably th(^ most diffi- 

 cult to study and classify of all the tribes in this sul)faiuily, and I am 

 by no means satisfied that, as at present constituted, it is a natural 

 group, or that it can idways be kept separate from the llrr^iitellnL 

 In fact, I am inclined to l)elie\'e, from studies thus far made in the two 

 groups, that some of the forms now placed in the Heinitelmi really 

 l)elong here, and that the clos<'d or open areolet will not alw'ays prove 

 a reliable character to separate them, although typical forms are 

 readily separated by it. 



For the present, however, or until a larger and better collection can 

 be brought together, I prefer to treat these two trib(>s in the Fors- 

 terian sense. 



Al)out 51 genera are now recognized in the tribe, separa))le as 

 follows: 



table of (;eneka. 



Wings normal, not abbreviated 3 



Wings abbreviated. 



Wings uith a closed marginal eel 1 2 



Wings intJioul a marginal cell. 



Basal nervure i^resent; metanotnm incompletely areolated, the apical trans- 

 verse carina distinct, complete (112) Stibeuies Forster. 



(Type, Stlbeutes gravenhorsiii Foreter.) 

 Basal nervure absent; metanotum not areolated, the apical transverse carina 



incomplete (113) Pezoporus Forster. 



(Tj'pe, Pezomackus nigrocinctun (Travenhorst. ) 



2. Wings villi a basal nervure; metathorax completely areolated. 



(114) PhyrtHS Forster. 



(Type, Hemiteles heinipterus Gravenhorst.) 



Wings iritJioiU a basal nervure (115) Chamsezeliis Forster. 



3. First three joints of Hagellum not especially lengthened, or at least not the third; 



in female scarcely more than twice, or at most tlirice, as long 

 as thick; in male rarely more than thrice as long as thick at 



apex 8 



First three joints of flagellum much lengthened; the first and second at least 

 four times as long as wide at apex, or longer, the third fully 

 three or more times longer than thick 4 



4. Sides of the face clothed with a glittering or silvery white pubescence; parap- 



sidal furrows deep and extending at least to the middle of the 



mesonotum 5 



Sides of the face not clothed with a glittering wliite pubescence; parapsidal 

 furrows wanting or indistinct, at the most feebly indicated 

 anteriorly 6 



